Home Cosmetic Science Talk Formulating Anhydrous formula question about preservation

  • Anhydrous formula question about preservation

    Posted by Climatechangeanxiety on May 4, 2021 at 4:55 pm

    Hi! 

    So I have about 33% guar gum in my anhydrous shampoo (in addition to all my other surfs, etc). Is that bad? Let’s say it gets wet in the shower…will stuff start growing? I am using Benzyl Alchohol + DHA + a bit of KaSorbate as preservatives but afraid it’s not enough. 

    PhilGeis replied 3 years, 6 months ago 3 Members · 4 Replies
  • 4 Replies
  • PhilGeis

    Member
    May 7, 2021 at 10:04 am

    Is this a bar?

  • OldPerry

    Member
    May 7, 2021 at 12:32 pm

    This sounds like a solid product?

  • Climatechangeanxiety

    Member
    May 7, 2021 at 3:52 pm

    hi! Yes it is a solid product. I know people say solid products don’t need preservatives but I mean…I’m got a lot of guar gum in mine…

    I actually don’t understand why people say bars don’t need preservatives?? That stuff gets wet all the time! 

  • PhilGeis

    Member
    May 7, 2021 at 9:52 pm

    Of course it gets wet - that doesn’t mean you need to preserve a film of water.  You can’t preserve water pools around the bar,.  Think your wasting your money on preservation.  
    Does the get get mushy?

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